Stun gun



FIG. 1 is a front elevation view of a stun gun showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a right side elevation view;

FIG. 5 is a left side elevation view; and,

FIG. 6 is a left side isometric view of a stun gun showing my new design. 

The ornamental design for a stun gun, as shown and described. 